发明授权
- 专利标题： Thermally protective composite ceramic-metal coatings for high temperature use
- 专利标题（中）： 耐热复合陶瓷金属涂层，用于高温使用
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申请号： US441597申请日： 1989-11-27
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公开(公告)号： US5281487A公开(公告)日： 1994-01-25
- 发明人: Lee E. Rumaner , Dennis M. Gray , Richard L. Mehan , John R. Rairden, III
- 申请人： Lee E. Rumaner , Dennis M. Gray , Richard L. Mehan , John R. Rairden, III
- 申请人地址： NY Schenectady
- 专利权人： General Electric Company
- 当前专利权人： General Electric Company
- 当前专利权人地址： NY Schenectady
- 主分类号： C23C4/02
- IPC分类号： C23C4/02 ; B22F3/00
摘要：
An improved thermal barrier coating is disclosed. The coating is formed on a metal part to be exposed to high temperature gases. The metal part is first coated with an adherent sublayer of MCrAlY alloy. In this case, the M of the MCrAlY is nickel, cobalt, iron, or some combination of these metals. A diffused layer of MCrAlY combined with a low concentration of mullite is formed over the MCrAlY subcoating and the mullite is increased in concentration as the thickness of the layer increases. The outer surface of the layer is all mullite. Improved life expectancy and decreased thermal conductivity is achieved.
公开/授权文献
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